JP4551006B2 - Air intake structure of work equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a dust-proof wall is configured by providing a resin-made frame body formed with an intake port for taking in outside air as the cooling fan is driven with a dust-proof net that prevents suction of dust from the intake port. Relates to the structure of the intake section of a working machine.
[0002]
[Prior art]
Conventionally, in the intake section structure of the working machine as described above, a metal plate was used as the frame body of the dust-proof wall, but in recent years, it is lighter and more formable than the metal plate. It has been considered to use an advantageous resin.
[0003]
[Problems to be solved by the invention]
However, when a resin frame is employed, the dust-proof wall can be reduced in weight and the structure can be simplified, but the disadvantage of reducing the strength of the dust-proof wall has been incurred.
[0004]
An object of the present invention is to ensure the necessary strength as a dust-proof wall while adopting a resin-made one for the frame of the dust-proof wall.
[0005]
[Means for Solving the Problems]
〔Constitution〕
To achieve the above object, in the first aspect of the present invention of the present invention, the lateral side position of the driver's seat in the driver's section of the vehicle body, the air inlet for taking a cooling outside air with the driving of the cooling fan wherein In the intake part structure of a working machine, wherein the frame made of resin formed facing the cooling fan is equipped with a dust-proof net that prevents suction of dust from the intake port to form a dust-proof wall. A partition having a shape that is inclined obliquely across the lower end portion of the front edge portion of the body and the central portion in the vertical direction of the rear edge portion , and whose upper edge is curved downward, than the outer surface of the dust net. A lateral partition that extends outwardly and extends across the upper end of the front edge of the frame and the vertical center of the rear edge; and the front end of the lateral partition The upper end of the front edge connected to the side and the rear Wherein the is provided a handrail over the upper edge of the frame body located in the part.
[0006]
[0007]
[0008]
[0009]
〔Constitution〕
In the invention according to claim 2 of the present invention, in the invention according to claim 1, the front portion where the handrail is connected at the upper edge of the frame body and the front-rear direction of the horizontal partition A vertical partition is provided over the middle portion, and an air inlet is formed in a compartment surrounded by the vertical partition, the upper edge, the rear edge, and the horizontal partition, and It is characterized in that a dust net is provided at the air inlet.
[0010]
[0011]
[0012]
[0013]
〔Constitution〕
According to a third aspect of the present invention, in the first or second aspect of the present invention, the dispersion plate that disperses the negative pressure generated when the cooling fan is driven is replaced with a porous plate that constitutes a dustproof net . It is characterized in that it is arranged side by side on the inner surface side, and this porous plate and the dispersion plate are attached to the frame.
[0014]
[Action]
According to the third aspect of the invention, since the dispersion plate is assembled to the frame body in parallel with the inner surface side of the porous plate in addition to the porous plate, the strength as a dust-proof wall can be further improved.
[0015]
In addition, the air speed of the cooling outside air taken in from the air inlet of the frame body through the dust proof mesh can be kept almost uniformly low throughout the air inlet, so that the clogging caused by dust adhering to the dust proof mesh can be further reduced. It can be effectively suppressed.
[0016]
In addition, assembling the porous plate to the frame body, it is not necessary to assemble the porous plate between the frame body and the porous plate to prevent the porous plate from being detached from the frame body. It will be easier.
[0017]
〔effect〕
Therefore, while simplifying the assembly structure and facilitating the assembly, the strength of the dust-proof wall can be further improved, and the maintenance frequency for the intake portion can be reduced more effectively.
[0018]
[0019]
[0020]
[0021]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an overall side view of a self-decomposing combine that is an example of a work machine. This combine is placed at the front of a traveling machine body 2 equipped with a pair of left and right crawler traveling devices 1. The threshing device 4 for chopping and transporting the chopping and conveying unit 3 so as to be able to move up and down and swinging the chopping cereal from the chopping and conveying unit 3 to the traveling machine body 2 A grain tank 5 for storing the grain from the threshing device 4 is mounted, and the grain tank 5 is equipped with a screw-type discharge mechanism 6 that discharges the grain stored in the inside to the outside of the machine. A boarding operation unit 7 is formed on the right side of the cutting and conveying unit 3 in the machine body 2.
[0022]
As shown in FIGS. 1 to 4, the boarding operation unit 7 is provided with a front panel 10 provided with a meter panel 8, a control lever 9, and the like at the front end of the boarding operation unit forming portion in the traveling machine body 2. The upper part of the engine cover 15 that covers the engine 14 and the like mounted on the rear part of the boarding operation part formation side by providing a side panel 13 provided with the main transmission lever 11 and the auxiliary transmission lever 12 on the left side of the part formation part. A driver's seat 16 is provided, and a boarding step 17 is laid on the floor portion surrounded by the front panel 10, the side panel 13, and the engine cover 15 at the place where the boarding driver is formed. The front panel 10 and the boarding step 17 are made of blow-molded resin, so that the weight of the machine body and the configuration are simplified compared to the case of using a sheet metal.
[0023]
As shown in FIGS. 1 to 5, a cooling fan 18 is provided on the right side of the engine 14, and a radiator 19 is erected on the right side of the cooling fan 18 in the traveling machine body 2. The engine cover 15 is installed on a side wall 20 that is erected on the right outer side of the radiator 19 in the traveling machine body 2 so as to be able to swing up and down around the axial center P in front of the engine 14. A wall 21 and a rear wall 22 erected at the rear of the fuselage of the engine 14 are connected to each other, and a ceiling wall 23 on which the driver's seat 16 is installed is installed over the front wall 21 and the rear wall 22. It is configured by installing an intake box 24 at a location behind the driver seat 16 on the wall 23, and its posture is a normal posture that covers the engine 14, the radiator 19, etc. by swinging around the longitudinal axis P, The engine 14 and the radiator 19 can be switched to a maintenance posture that opens the periphery, and can be fixed and held in a normal posture by a lock mechanism (not shown).
[0024]
The side wall 20 employs a dust-proof wall 28 that is configured by mounting a dust-proof net 27 that prevents the suction of dust from the suction port 25 on a resin frame 26 that is blown to have the suction port 25. Has been. On the front wall 21, a dust-proof wall constructed by mounting a dust-proof net 31 that prevents suction of dust from the intake port 29 on a frame 30 made of sheet metal formed so as to have a single intake port 29. 32 is adopted. The rear wall 22 and the ceiling wall 23 are made of sheet metal. The air intake box 24 includes a sheet metal frame 34 formed so as to have an air inlet 33 at the front and upper portions thereof and a dust-proof net 35 for preventing the suction of dust from the air inlet 33. Is adopted.
[0025]
As shown in FIGS. 1 to 8, the frame body 26 of the side wall 20 is provided with a handrail 36 and an intake port 25 that are located on the right outer side of the driver's seat 16 to facilitate getting on and off the boarding operation unit 7. 24, a lateral partition 37 that bisects the first intake port 25 </ b> A, which is the intake region facing the radiator 24, and the intake region, which faces the radiator 19, and the intake region that faces the radiator 19 is the second intake region that is the front upper intake region. An oblique partition 38 that bisects the intake port 25B and the third intake port 25C, which is the lower rear intake region, is provided. The handrail 36 is integrally formed on the frame body 26 of the side wall 20 in a cantilever shape extending over the upper edge portion 39 and the front edge portion 40 thereof. The lateral partition 37 is integrally formed on the frame body 26 of the side wall 20 so as to extend over the front edge portion 40 and the rear edge portion 41 thereof. The diagonal partition 38 is integrally formed on the frame body 26 of the side wall 20 so as to extend over the rear end edge portion 41 and the lower end edge portion 42.
A vertical partition 55 is provided across the front portion where the handrail 36 is connected at the upper edge 39 of the frame 26 and the intermediate portion in the front-rear direction of the horizontal partition 37, One intake port 25 </ b> A is formed in a section surrounded by the vertical partition 55, the upper edge 39, the rear edge 41, and the horizontal partition 37.
[0026]
In other words, the frame body 26 of the side wall 20 is made of resin that is blow-molded, which is advantageous in reducing the weight of the machine body and simplifying the structure, but the frame body 26 has a doubly supported shape. By integrally forming the handrail 36 and the two partitions 37 and 38 that divide the intake port 25 of the frame 26 into three intake ports 25A to 25C, the rigidity of the frame 26 itself can be increased, The trouble of attaching the handrail 36 and the partitions 37 and 38 to the side wall 20 can be saved.
[0027]
From the above configuration, when the cooling fan 18 is driven, cooling outside air is taken in from the intake ports 25, 29, 33 through the dustproof nets 27, 31, 35, and from the intake port 29 of the front wall 21. The taken-in cooled outside air passes through the communication port 43 formed at the junction of the front wall 21 with the side wall 20, and the cooled outside air taken in from each intake port 33 of the intake box 24 After passing through the gap 44 formed between the side wall 20 and the ceiling wall 23 together with the cooling outside air taken in from the first air inlet 25A, it is taken in from the second air inlet 25B and the third air inlet 25C on the side wall 20. The air then flows toward the engine room 45 partitioned by the engine cover 15 to cool the radiator 19 and the engine 14.
[0028]
As shown in FIGS. 3 to 5 and FIGS. 7 to 11, each of the dust-proof nets 31 and 35 of the front wall 21 and the intake box 24 employs a perforated plate 46 made of a flat metal net, but has a side wall. The 20 dust-proof mesh 27 employs a perforated plate 47 made of punching metal that is bent and formed into a wave shape in which a plurality of irregularities 47A and 47B are arranged in the lateral direction in a size covering the entire area of the air inlet 25. A plurality of irregularities 26 </ b> A and 26 </ b> B that fit with the perforated plate 47 are formed on the inner peripheral surface of each of the intake ports 25 </ b> A to 25 </ b> C in the frame body 26.
[0029]
With this configuration, the strength of the dust screen 27 itself is higher than when a perforated plate formed as a flat plate is used as the dust screen 27, and the dust screen 27 is fitted to the projections 26 A and 26 B of the frame 26. As a result, the frame body 26 and the dustproof mesh 27 are closed at the intake ports 25A to 25C of the frame body 26 with a single strong dustproof mesh 27, and the dustproof mesh 27 is closed to the intake ports 25A to 25A. Since it can be integrated with a large joining area supported by the inner peripheral surface of 25C, the frame 26 is made of resin that is lightweight and advantageous in terms of moldability, The required strength can be secured.
[0030]
Further, compared to the case where a flat plate formed as a dustproof mesh 27 is employed, the intake area becomes larger, and the cooling outside air taken in via the dustproof mesh 27 from the intake ports 25A to 25C of the frame body 26 is increased. Since the wind speed can be kept low and clogging due to dust adhering to the dust screen 27 can be suppressed, overheating is performed while reducing the frequency of maintenance for removing dust from the dust screen 27 on the side wall 20. Can be avoided.
[0031]
As shown in FIGS. 3, 5, 10, and 11, a dispersion plate 48 made of a punching metal that disperses the negative pressure generated when the cooling fan 18 is driven is provided on the inner surface side of the dust-proof net 27 on the side wall 20. Are arranged side by side, whereby the wind speed of the cooling outside air taken in from the intake port 25 of the side wall 20 via the dust screen 27 can be kept evenly low throughout the intake port 25. Generation | occurrence | production of the clogging by dust adhering can be suppressed more effectively.
[0032]
The dispersion plate 48 is fastened to the frame body 26 together with the dustproof mesh 27 by a plurality of tapping screws 49 so that the dustproof mesh 27 is prevented from being detached from the frame body 26 when the side wall 20 is assembled to the frame body 26. As a result, the dustproof mesh 27 can be assembled to the frame body 26 only by fitting the dustproof mesh 27 to the irregularities 26A and 26B of the frame body 26, and from the frame body 26 of the dustproof mesh 27. Since it is not necessary to perform the assembly for preventing the separation between the frame body 26 and the dust-proof net 27, the assembly structure can be simplified and the assembly can be facilitated.
[0033]
Further, in addition to the dust screen 27, the dispersion plate 48 is also assembled to the frame body 26 in a state of being arranged side by side on the inner surface side of the dust screen 27, so that the strength as the dust wall 28 can be further improved.
[0034]
Reference numeral 50 shown in FIGS. 7 and 8 is an embedded nut mounted on the frame body 26 in order to allow the front wall 21, the rear wall 22 and the intake box 24 to be connected to the side wall 20. Reference numeral 51 shown in FIGS. 8 and 11 is a mounting hole formed in the frame body 26 to enable the dustproof mesh 27 and the dispersion plate 48 to be fixed to the frame body 26 by the tapping screw 49. Reference numeral 52 shown in FIG. 11 is a through hole for inserting the tapping screw 49 formed in the dust net 27, and reference numeral 53 shown in FIG. 11 is inserted into the tapping screw 49 formed in each leg portion 48 A of the dispersion plate 48. It is a common through hole.
[0035]
3, 5, and 10 is an internal wall interposed between the side wall 20, the front wall 21, the rear wall 22, the ceiling wall 23, and the intake box 24.
[0036]
[Another embodiment]
Hereinafter, other embodiments of the present invention will be listed.
(1) The working machine may be a full-throw-in type combine harvester or a mower as long as it is equipped with a dust-proof wall 28, or may be an air-cooled type not equipped with the radiator 19. .
(2) The perforated plate 47 employed in the dust-proof net 27 of the side wall 20 may be made of a metal net or expanded metal bent into a wave shape in which a plurality of irregularities 47A and 47B are arranged in the lateral direction, Alternatively, it may be divided and formed in a size corresponding to the size of each of the intake ports 25A to 25C.
(3) The frame body 26 of the side wall 20 may be injection-molded, or may be formed with a single air inlet 25.
(4) When the frame 26 is formed by supplying the resin material after the dust net 27 is installed in the mold for molding the frame 26 of the side wall 20, the frame 26 and the dust net 27 are separated. You may make it integrate in an impossible state.
(5) Similarly to the side wall 20, the front wall 21 and the rear wall 22 are provided with a resin frame 26 formed so as to have the air inlet 25, and the dust is prevented from sucking dust from the air inlet 25. You may make it employ | adopt the dust-proof wall 28 comprised equipped with the net | network 27. FIG.
(6) The dispersion plate 48 may be made of resin.
[Brief description of the drawings]
[Fig. 1] Overall side view of self-removing combine [Fig. 2] Plan view of boarding operation unit [Fig. 3] Vertical front view of main part showing intake structure [Fig. 4] Perspective view of engine cover [Fig. FIG. 6 is a front view of the frame showing the surface shape of the frame constituting the side wall. FIG. 7 is a rear view of the frame showing the shape of the back surface of the frame constituting the side wall. FIG. 8 is a perspective view of the frame showing the shape of the back surface of the frame constituting the side wall. FIG. 9 is a front view of the dust proof net showing the shape of the dust proof net constituting the side wall. Cross-sectional plan view [FIG. 11] Exploded cross-sectional plan view of the lower side wall showing the configuration of the side wall [Explanation of symbols]
DESCRIPTION OF SYMBOLS 18 Cooling fan 25 Air inlet 25A Air inlet 25B Air inlet 25C Air inlet 26 Frame 26A Concave 26B Convex 27 Dustproof net 28 Dustproof wall 47 Perforated plate 47A Concave 47B Convex 48 Dispersion plate

Claims (3)

An air intake port that takes in cooling outside air as the cooling fan is driven at the side position of the driver's seat in the boarding operation section of the traveling machine body is formed on the resin frame formed to face the cooling fan from the air intake port. It is an intake part structure of a work machine that is equipped with a dustproof net that prevents the suction of dust and that constitutes a dustproof wall,
A partition having a shape that is inclined obliquely across the lower end portion of the front edge portion of the frame body and the vertical center portion of the rear edge portion , and whose upper edge is bent downward, from the outer surface of the dust net. even while extended to protrude on the body outer side, provided with a transverse partition across the vertical center portion of the edge portion of the upper end portion and the rear edge portion of the front side of the frame body,
A handrail is provided over the upper edge of the front edge to which the front edge of the horizontal partition is connected and the upper edge of the frame located at the upper rear side. Air intake part structure of the machine.   A vertical partition is provided across the front portion where the handrail is connected at the upper edge of the frame and the intermediate portion in the front-rear direction of the horizontal partition, and the vertical partition and the upper end The intake part structure for a working machine according to claim 1, wherein an intake port is formed in a section surrounded by the edge part, a rear end edge part, and a horizontal partition, and a dustproof net is provided in the intake port.   Dispersion plates that disperse the negative pressure generated when the cooling fan is driven are juxtaposed on the inner surface side of the perforated plate constituting the dust net, and the perforated plate and the dispersion plate are attached to the frame. The intake part structure of the working machine according to claim 1 or 2.

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